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| author | Zhenzhong Duan <zhenzhong.duan@intel.com> | 2024-08-14 15:13:19 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2024-09-11 09:46:14 -0400 |
| commit | 663168943d3db6d9b51d3dfa0998848a6e6eda71 (patch) | |
| tree | 48cdf2921605ffd9400ec438c846dce62490ee12 | |
| parent | e667485a80ed3f3849ea7421a63fe8ba553cd25e (diff) | |
| download | qemu-663168943d3db6d9b51d3dfa0998848a6e6eda71.zip qemu-663168943d3db6d9b51d3dfa0998848a6e6eda71.tar.gz qemu-663168943d3db6d9b51d3dfa0998848a6e6eda71.tar.bz2 | |
intel_iommu: Fix invalidation descriptor type field
According to spec, invalidation descriptor type is 7bits which is
concatenation of bits[11:9] and bits[3:0] of invalidation descriptor.
Currently we only pick bits[3:0] as the invalidation type and treat
bits[11:9] as reserved zero. This is not a problem for now as bits[11:9]
is zero for all current invalidation types. But it will break if newer
type occupies bits[11:9].
Fix it by taking bits[11:9] into type and make reserved bits check accurate.
Suggested-by: Clément Mathieu--Drif<clement.mathieu--drif@eviden.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Yi Liu <yi.l.liu@intel.com>
Reviewed-by: Clément Mathieu--Drif<clement.mathieu--drif@eviden.com>
Message-Id: <20240814071321.2621384-2-zhenzhong.duan@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/i386/intel_iommu.c | 2 | ||||
| -rw-r--r-- | hw/i386/intel_iommu_internal.h | 11 |
2 files changed, 7 insertions, 6 deletions
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 16d2885..68cb72a 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -2744,7 +2744,7 @@ static bool vtd_process_inv_desc(IntelIOMMUState *s) return false; } - desc_type = inv_desc.lo & VTD_INV_DESC_TYPE; + desc_type = VTD_INV_DESC_TYPE(inv_desc.lo); /* FIXME: should update at first or at last? */ s->iq_last_desc_type = desc_type; diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h index 5f32c36..13d5d12 100644 --- a/hw/i386/intel_iommu_internal.h +++ b/hw/i386/intel_iommu_internal.h @@ -356,7 +356,8 @@ union VTDInvDesc { typedef union VTDInvDesc VTDInvDesc; /* Masks for struct VTDInvDesc */ -#define VTD_INV_DESC_TYPE 0xf +#define VTD_INV_DESC_TYPE(val) ((((val) >> 5) & 0x70ULL) | \ + ((val) & 0xfULL)) #define VTD_INV_DESC_CC 0x1 /* Context-cache Invalidate Desc */ #define VTD_INV_DESC_IOTLB 0x2 #define VTD_INV_DESC_DEVICE 0x3 @@ -372,7 +373,7 @@ typedef union VTDInvDesc VTDInvDesc; #define VTD_INV_DESC_WAIT_IF (1ULL << 4) #define VTD_INV_DESC_WAIT_FN (1ULL << 6) #define VTD_INV_DESC_WAIT_DATA_SHIFT 32 -#define VTD_INV_DESC_WAIT_RSVD_LO 0Xffffff80ULL +#define VTD_INV_DESC_WAIT_RSVD_LO 0Xfffff180ULL #define VTD_INV_DESC_WAIT_RSVD_HI 3ULL /* Masks for Context-cache Invalidation Descriptor */ @@ -383,7 +384,7 @@ typedef union VTDInvDesc VTDInvDesc; #define VTD_INV_DESC_CC_DID(val) (((val) >> 16) & VTD_DOMAIN_ID_MASK) #define VTD_INV_DESC_CC_SID(val) (((val) >> 32) & 0xffffUL) #define VTD_INV_DESC_CC_FM(val) (((val) >> 48) & 3UL) -#define VTD_INV_DESC_CC_RSVD 0xfffc00000000ffc0ULL +#define VTD_INV_DESC_CC_RSVD 0xfffc00000000f1c0ULL /* Masks for IOTLB Invalidate Descriptor */ #define VTD_INV_DESC_IOTLB_G (3ULL << 4) @@ -393,7 +394,7 @@ typedef union VTDInvDesc VTDInvDesc; #define VTD_INV_DESC_IOTLB_DID(val) (((val) >> 16) & VTD_DOMAIN_ID_MASK) #define VTD_INV_DESC_IOTLB_ADDR(val) ((val) & ~0xfffULL) #define VTD_INV_DESC_IOTLB_AM(val) ((val) & 0x3fULL) -#define VTD_INV_DESC_IOTLB_RSVD_LO 0xffffffff0000ff00ULL +#define VTD_INV_DESC_IOTLB_RSVD_LO 0xffffffff0000f100ULL #define VTD_INV_DESC_IOTLB_RSVD_HI 0xf80ULL #define VTD_INV_DESC_IOTLB_PASID_PASID (2ULL << 4) #define VTD_INV_DESC_IOTLB_PASID_PAGE (3ULL << 4) @@ -406,7 +407,7 @@ typedef union VTDInvDesc VTDInvDesc; #define VTD_INV_DESC_DEVICE_IOTLB_SIZE(val) ((val) & 0x1) #define VTD_INV_DESC_DEVICE_IOTLB_SID(val) (((val) >> 32) & 0xFFFFULL) #define VTD_INV_DESC_DEVICE_IOTLB_RSVD_HI 0xffeULL -#define VTD_INV_DESC_DEVICE_IOTLB_RSVD_LO 0xffff0000ffe0fff8 +#define VTD_INV_DESC_DEVICE_IOTLB_RSVD_LO 0xffff0000ffe0f1f0 /* Rsvd field masks for spte */ #define VTD_SPTE_SNP 0x800ULL |